﻿/************************************************************************

   Extended Silverlight Toolkit

   Copyright (C) 2010-2012 Xceed Software Inc.

   This program is provided to you under the terms of the Microsoft Public
   License (Ms-PL) as published at http://extendedsilverlight.codeplex.com/license

   Please purchase a commercial version of this toolkit if you are using
   it in a commercial product. The commercial versions support the project,
   and also include more features for each control, priority support,
   source code, updates, removed watermark, and a proprietary license.

   Visit http://xceed.com and follow @datagrid on Twitter.

  **********************************************************************/

using System;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Collections.Generic;
using System.Collections;
using System.Linq;
using System.Collections.Specialized;

namespace Xceed.Silverlight.Data
{
  internal class ListHandler : SourceHandlerBase, ISyncHandler
  {
    public ListHandler( IList data )
    {
      if( data == null )
        throw new ArgumentNullException("data");

      m_source = data;
      INotifyCollectionChanged notificationList = data as INotifyCollectionChanged;
      if(notificationList != null)
      {
        notificationList.CollectionChanged += new NotifyCollectionChangedEventHandler( SourceCollectionChanged );
      }

    }

    public int ItemCount
    {
      get 
      {
        return m_source.Count;
      }
    }

    internal IList OriginalList
    {
      get
      {
        return m_source;
      }
    }


    private void SourceCollectionChanged( object sender, NotifyCollectionChangedEventArgs e )
    {
      if( ( e.Action == NotifyCollectionChangedAction.Add )
        || ( e.Action == NotifyCollectionChangedAction.Remove )
        || ( e.Action == NotifyCollectionChangedAction.Reset ) )
      {
        this.RaiseItemCountChanged();
      }
    }

    private IList m_source;

  }
}
